Plastic made of potato starch is a promising material for packaging, which is a big new application for starch plastics. This is shown in Åsa Rindlav-Westling’s doctoral dissertation, which was carried out in Paul Gatenholm’s research team in polymer technology at Chalmers University of Technology, Sweden.
Our huge quantities of refuse could be reduced and a greater proportion than today could be composted. Combustion of materials from oil, such as conventional plastics and fossil fuels, raise levels of carbon dioxide in the atmosphere, increasing the risk of the greenhouse effect and environmental problems. Starch polymers, extracted from potatoes, corn, and wheat, for instance, can be used as raw materials for biologically degradable plastics. Today the EU has a surplus of agricultural products, and a certain share could be used as raw materials in the production of plastics. At present disposable eating utensils and packaging chips are made from starch. A major new field of use for plastic films made of starch could be packaging. Starch films have excellent oxygen-barrier properties and in some cases can replace aluminium when it comes to protecting oxygen-sensitive foods.
Potato starch is produced from carbon dioxide and water with the help of energy from the sun when potatoes grow. Åsa Rindlav-Westling’s doctoral work deals with plastic films made from potato starch. Her work has involved studying starch-film structure, which affects its properties. By varying the conditions under which the film is produced, she has been able to control the structure. Slow formation of film results in starches that exhibit well-ordered films, and crystallinity is high. Film properties like strength and elasticity are affected by crystallinity.
Jorun Fahle | alphagalileo
Invasive Insects Cost the World Billions Per Year
04.10.2016 | University of Adelaide
Malaysia's unique freshwater mussels in danger
27.09.2016 | The University of Nottingham Malaysia Campus
Researchers from the Institute for Quantum Computing (IQC) at the University of Waterloo led the development of a new extensible wiring technique capable of controlling superconducting quantum bits, representing a significant step towards to the realization of a scalable quantum computer.
"The quantum socket is a wiring method that uses three-dimensional wires based on spring-loaded pins to address individual qubits," said Jeremy Béjanin, a PhD...
In a paper in Scientific Reports, a research team at Worcester Polytechnic Institute describes a novel light-activated phenomenon that could become the basis for applications as diverse as microscopic robotic grippers and more efficient solar cells.
A research team at Worcester Polytechnic Institute (WPI) has developed a revolutionary, light-activated semiconductor nanocomposite material that can be used...
By forcefully embedding two silicon atoms in a diamond matrix, Sandia researchers have demonstrated for the first time on a single chip all the components needed to create a quantum bridge to link quantum computers together.
"People have already built small quantum computers," says Sandia researcher Ryan Camacho. "Maybe the first useful one won't be a single giant quantum computer...
COMPAMED has become the leading international marketplace for suppliers of medical manufacturing. The trade fair, which takes place every November and is co-located to MEDICA in Dusseldorf, has been steadily growing over the past years and shows that medical technology remains a rapidly growing market.
In 2016, the joint pavilion by the IVAM Microtechnology Network, the Product Market “High-tech for Medical Devices”, will be located in Hall 8a again and will...
'Ferroelectric' materials can switch between different states of electrical polarization in response to an external electric field. This flexibility means they show promise for many applications, for example in electronic devices and computer memory. Current ferroelectric materials are highly valued for their thermal and chemical stability and rapid electro-mechanical responses, but creating a material that is scalable down to the tiny sizes needed for technologies like silicon-based semiconductors (Si-based CMOS) has proven challenging.
Now, Hiroshi Funakubo and co-workers at the Tokyo Institute of Technology, in collaboration with researchers across Japan, have conducted experiments to...
14.10.2016 | Event News
14.10.2016 | Event News
12.10.2016 | Event News
21.10.2016 | Health and Medicine
21.10.2016 | Information Technology
21.10.2016 | Materials Sciences